Thousands of Brit holiday flights attacked by ‘extremely dangerous Russian jamming’ in major threat to air safety

War expert Dr Jack Watling, at the RUSI think tank, said: “The Russians have long used GPS jamming as a harassment tool, projecting it across Nato borders. Wherever there is a large Russian garrison you are seeing GPS denial and there is one in Kaliningrad. They just have that stuff switched on because there are standing orders.”